Smoker&#39;s pipe



Patented S,

"-7 a wet '1: n 1 13 W n w i EUGENE VAN DE VOORDE, 0F BREMEN, GERMANY.

SMOKEES PIEE.

Application filed August 31, 1921.

T0 cZZ "ac/ mm it may concern:

Be it 1; own that I, Eneiarzn van on Voonnn, a citizen of Germany, and resident of Bremen, Germany, have invented certain new and useful improvements Relating to Smokers Pipes, of which the foliowing is a specification.

The pipes used until to-day present several drawbacks, viz the smoke enters the mouth at a, too high temperature; the tobacco becomes wet in the bowl after it is lighted, whereby the combustion is irregular and the taste of the smoke unpleasant, and, owing to the moisture which accumulates at the bottom of the bowl, the lower layer of tobacco becomes wet and does not burn; furthermore the heavy nicotines are carried with the smoke through the stem and mouthpiece of the pipe and enter the mouth of the smoker and finally said pipes are diflicult to keep clean.

\Vhen smoking a cigar, the above drawbacks are not experienced, and whilst studying the various stages of combustion of a cigar and inhaling the resulting smoke, I made it my study to arrange a pipe in which the conditions of combustion of the tobacco and inhaling of smoke are similar to the corresponding conditions when smoking a cigar.

Owing to the irregular layers of tobacco leaves from which a cigar is made, the smoke reaches the mouth after flowing slowly through many windings and the pores of the tobacco leaves effect the function of compensators of the temperature whereby they give back to the outer air, the moisture of the air inhaled through the cigar by the smoker and the moisture contained in the tobacco, whilst the ci ar is kept dry.

in the novel pipe, which is the object of the present invention, the above conditions of combustion are got by making use of a bowl made of highly porous burnt clay which readily absorbs the moisture; however after a short time such bowls become saturated with moisture and heavy nicotines, proceeding from the tobacco and obstructin the pores of the clay and should be replaced by a fresh one. For this reason the bowls are made interchangeable, and in order to manufacture same at a low cost, and in large quantities, they should be of simple shape.

In order to cool the smoke in the same way as in a cigar, the pipe proper or tube is Serial No. 497,294.

made of a heat conducting material, and preferably of aluminium. The walls should be thin and the diameter large and the cross section should be uniform from the bowl to the mouthpiece, in order that the smoke may low slowly through same. In the interior of the tube is inserted a bundle of fine aluminium chips or wire having for its object to uniformly distribute the smoke within the tube. This bundle of chips or wire, which I call a diffuser, is in direct contact and metallic connection with the wall of the metal tube. In such conditions the smoke from the bowl slowly and uniformly flows through the whole section of the tube where it is cooled by the diffuser, and the heat absorbed by the latter passes by conductivity to the Wall of the tube and then to the outer air. Owing to this efiicient cooling of the smoke, a condensing of the heavier nice-- tines occurs. These substances of a biting and burning taste, are violent poisons, but the carriers of the flavour and taste of the burnt tobacco, are not eliminated from the smoke, so that the charm and enjoyment of the smoker are highly increased.

it seems that the cooling power of the pipe proper upon the smoke should be increased by providing same with lbs or corrugations. However I have found that when polishing the outer ace of the metal tube, the cooling is more etlicient owing to the radiation of heat. I

The mouth piece is made of ebonite or like bad heat conductor; its temperature is higher than that of the pipe proper, so that no further condensing of non-volatile sul stances occur in the mouthpiece and no more nicotines enter the smokers mouth.

The most convenient shape of a pipe that of a hook or an U, as such pipes hang naturally from the smokers mouth and are held by the teeth. Furthermore the axis of the bowl is continuously maintained in a vertical direction, which facilitates a uniform combustion and prevents the dropping of the ashes.

A tight joint between the mouthpiece and pipe is secured by means of a ring made from a resilient material such as soft rubber, in order to reduce the shocks resulting from the motions of the smoker, so that the teeth of the latter are not exposed to strains. Such joint is eliicient, easy to take to pieces, and to clean.

In order to clean the pipe, the bowl and mouthpiece are removed and the pipe proper, with the diffuser, are plunged in boiling water, whereby it is thoroughly cleaned and any smell is removed.

The novel pipe, provided with the above mentioned improvements is shown by way of example in the accompanying drawing, in which Figs. 1 and 2 show axial sections of two constructive forms of same.

1 shows a pipe in which the pipe proper 2, made of aluminium, is hook shaped, whilst the pipe of Fig. 2 is formed of a cylindrical portion 2 and an elbow portion 2 conveniently connected together. In both constructive forms said pipe has a uniform section of large diameter.

3 designates the diffuser formed by means of fine chips or wire of aluminium through which the flowing smoke iscooled and purified from its nonvolatile substances. The outer face of pipe 2 or 2 2" is polished in order to readily transmit the heat to the outer air by radiation as well as by convection and contact.

Bowl 1 is made of very porous brunt clay and slightly conical on its outer and inner face, in order to make the manufacture of same more easy. The bottom part (3 is thick as it is more exposed to the moisture than the lateral walls which are thin, in order to allow the steam, produced during the combustion of the tobacco, from readily escaping through the pores of the walls, whereby the tobacco is kept dry and may be wholly burnt.

The mouthpiece 4: made of gutta percha or the like material, is provided with a thicker end portion 7 inserted into the pipe 2 and provided with an annular groove 8 into which is inserted a ring 5 of smooth rubber or the like resilient material and having a circular or square section, said ring forming a tight joint between both parts 2 and At the end of the pipe 2 (2) are provided two small semi-circular grooves 9 in which are inserted spring rings between which the ring 5 may slightly move in order to secure a resilient joint.

The various parts of the pipe so arranged and combined as to comply with the conditions of combustion of tobacco and for cooling the smoke and freeing it fron'i nicotine.

The pipe is furthermore simple, light and may be readily cleaned.

Having now fully described my said invention, what I claim and desire to secure by Letters Patent, is:

A smokers pipe, comprising a bowl, a mouth piece formed near one end with a groove, a tubular portion extending between the bowl and the mouth piece, sa' l tubedike portion being of heat conductive material. and substantially of uniform diameter, a resilient washer litted in the groove in the mouth piece and engaging the inner surface of the tubular portion, said tubular portion being formed with a groove above and below the resilient washer, springs mounted in the last mentioned grooves to hold the resilient washer against displacement, and a metallic heat diffuser in the tube-like portion to conduct the heat of the smoke to the tube-like portion for radiation.

In testimony whereof I have hereunto set my hand.

EUGENE VAN on VOOR-DE. 

